Cribb, B.W. and Hull, C.D. and Moore, C.J. and Miller, L.J. and Yeates, D.K. (1998) Structure of Raster in Melolonthine Larvae. Annals of the Entomological Society of America, 91 (2). pp. 202-210.
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Ultrastructural and electrophysiological investigations carried out on larval rasters of Rhopaea magnicomis Blackburn, Lepidiota frerzclzi Black, and Antitr-ogus consanguineus Blackburn revealed that the raster is a complex of mechanoreceptive setae. Chemical and morphological investigations provide no evidence that the raster is a site for chemical emissions; however, species differences in hydrocarbon profiles were found among larval cuticle samples. Ultrastructure of the setae (pali) show that each seta is innervated by a single dendrite which ends in a tubular body at the base of the seta. The connection with the seta is on the proximal side, which corresponds to the production of a phasic-tonic electrophysiological signal on downward deflection. The dendrite is surrounded by a granular, electron-dense sheath which has inwardly directed arms distally and outwardly directed arms proximally. Two sheath cells are present, 1 forming a large receptor lymph cavity which is lamellate and lined with electron-dense material.
|Additional Information:||© Entomological Society of America.|
|Keywords:||Antitrogus spp.; Rhopaea magnicornis; Lepidiota frenclzi; mechanoreceptor; cuticular hydrocarbons.|
|Subjects:||Science > Zoology > Invertebrates > Insects|
|Deposited On:||17 Jan 2006|
|Last Modified:||15 Jun 2011 06:02|
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